Signs of past California 'mega-quakes' show danger of the Big One on San Andreas fault
As Interstate 10 snakes through the mountains and toward the golf courses, housing tracts and resorts of the Coachella Valley, it crosses the dusty slopes of the San Gorgonio Pass.
The pass is best known for the spinning wind turbines that line it. But f
or geologists, the narrow desert canyon is something of a canary in the coal mine for what they expect will be a major earthquake coming from the San Andreas fault.